JPH0512974A - Coil assembly of electromagnetic relay - Google Patents

Abstract

PURPOSE:To increase the strength of a spool terminal by provision of an extension part, and prevent the terminal from deformation and slipping-off likely when a coil winding is to be entangled or soldered. CONSTITUTION:A coil assembly 1 has a spool pon which a coil winding 4 and a channel-shaped core 3 are arranged, and flanges 2A and 2B are provided at the two ends. At each end of the flange 2A/2B a spool terminal 5 is furnished, which is equipped externally with a drawout lead entangling part 6 for winding as initial turn the drawpout lead of the coil winding 4 and a leadout part 7 for connectin with the outside and internally with an extension part 8 as extending from at least one of the entangling and leadout parts 6, 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay coil assembly, and more particularly to an electromagnetic relay coil assembly having an improved spool terminal structure.

[0002]

2. Description of the Related Art Conventionally, a coil assembly of an electromagnetic relay of this type is constructed by penetrating a U-shaped iron core at the center and arranging spool terminals on the flanges at both ends.

FIG. 3 is a perspective view of a coil assembly of an electromagnetic relay showing such a conventional example. As shown in FIG. 3, in a conventional coil bobbin 1A, an L-shaped spool terminal 5A having a lead-out wire stripping portion 6 and an external lead-out portion 7 at both ends and a U-shaped iron core 3 are integrally formed by flanges 2A and 2B made of an insulator. Molded. That is, the L-shaped spool terminal 5A has a flange portion 2A formed of an insulator,
It is formed by being embedded in 2B. Also, both flanges 2
The coil winding 4 is wound around the bobbin sandwiched between A and 2B, and both ends of the coil winding 4 are twisted to the lead wire twisting portion 6,
It constitutes the coil assembly 1A.

[0004]

In the coil assembly of the conventional electromagnetic relay described above, since the flange portion is thin, the fixing force of the spool terminal is weak, and the spool terminal is deformed when the coil wire is twisted. However, it has the drawback of falling off. In addition, when the coil winding is twisted and then soldered, the heat of the solder deforms the insulator, causing the spool terminal to fall off.

An object of the present invention is to provide a coil assembly of an electromagnetic relay which increases the strength of such a spool terminal and prevents the spool terminal from being deformed or dropped when the coil wire is stripped or soldered.

[0006]

A coil assembly of an electromagnetic relay according to the present invention comprises a coil winding wound around a spool, a U-shaped iron core penetrating the inside of the spool, and both ends of the U-shaped iron core. A flange protruding from the upper surface, a lead-out wire bark portion around which the lead-out wire of the coil winding is wound, and an external lead-out portion are projected at both ends of the flange, and the lead-out wire barbed portion or the outside is formed inside the flange. It is configured by forming an extension from the lead-out portion.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a perspective view of a coil assembly of an electromagnetic relay showing a first embodiment of the present invention. As shown in FIG. 1, the coil assembly 1 of this embodiment is a spool (not shown).
The coil winding 4 is wound around and the U-shaped iron core 3 is penetrated inside. Flange 2A, 2B is formed at both ends of the spool, and both ends of the U-shaped iron core 3 are projected. Further, an external lead-out portion 7 for externally connecting the lead wire barb portion 6 around which the lead wire of the coil winding 4 is wound is formed at a right angle on the flanges 2A and 2B, and at the inside thereof, a barb is formed. A spool terminal 5 having an extension portion 8 obtained by extending the portion 6 or the lead-out portion 7 is provided. The spool terminal 5 in which the extension portion 8 is embedded is horizontally arranged along the flanges 2A and 2B. Since the extension portion 8 is formed in this manner, the spool terminal 5 is deformed or deformed even when the leader wire is wound around the leader portion 6 and the external lead-out portion 7 is soldered. Dropping out is also eliminated.

FIG. 2 is a perspective view of a coil assembly of an electromagnetic relay showing a second embodiment of the present invention. As shown in FIG. 2, this embodiment differs from the first embodiment in the shape of the spool terminal 5 formed on the flanges 2A and 2B of the coil assembly 1. That is, the spool terminal 5 embedded in the flanges 2A and 2B has the extension 8 formed vertically along the flanges 2A and 2B, so that the spool terminal 5 can be further prevented from being deformed or dropped.

[0010]

As described above, in the coil assembly of the electromagnetic relay according to the present invention, the extension of the spool terminal is internally arranged horizontally or vertically along the flange portion to improve the strength of the spool terminal. Increase,
This has the effect of preventing the coil winding from being deformed or dropped when it is twisted or soldered.

[Brief description of drawings]

FIG. 1 is a perspective view of a coil assembly of an electromagnetic relay showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a coil assembly of an electromagnetic relay showing a second embodiment of the present invention.

FIG. 3 is a perspective view of a coil assembly of an electromagnetic relay showing a conventional example.

[Explanation of symbols]

1 coil assembly 2A, 2B flange 3 U-shaped iron core 4 coil winding 5 spool terminal 6 Leader barges 7 External derivation part 8 extension

Claims (2)

[Claims] 1. A coil winding wound around a spool, a U-shaped iron core penetrating the inside of the spool, a flange in which both ends of the U-shaped iron core are projected from the upper surface, and a lead wire of the coil winding. A spool terminal in which a lead-out portion and an external lead-out portion around which the lead wire is wound are projected from both ends of the flange, and the lead-out wire lead-out portion or an extension from the external lead-out portion is formed inside the flange. A coil assembly for an electromagnetic relay, characterized by: 2. The coil assembly of the electromagnetic relay according to claim 1, wherein the extension of the spool terminal is disposed horizontally or vertically along the flange.